Malicious PDF — malware analysis report

Static analysis result for SHA-256 e16e37d0ccf41e25…

MALICIOUS

PDF

40.6 KB Created: 2021-05-10 19:40:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 221019e0de06ad129112ff98d8a2d2a7 SHA-1: 7b5cc3de35cf43aa75d18d6cddc9d449255e1b98 SHA-256: e16e37d0ccf41e252c0cc29c2e80c5ce27c222d4342178e074be17507adede5d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/free-coins-game-hack PDF link annotation
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/minecraft-free_GM479516143.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coins-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48DA 24376 bytes
SHA-256: d0dc38542286f488a54fda47420a66c702b5853c84771b618f0ca346889fb3ec
font_01_sfnt_off00007f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F04 17380 bytes
SHA-256: 4587a0da3d318d3aab2e4d3a2e17e88175961c64bd2fb3ac3dbf4933656e475a

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